Factory Functions & Singleton Pattern

What does this factory function achieve with Object.create?

const userFunctions = {
  getName() {
    return this.name;
  },
  getRole() {
    return this.role;
  }
};

function createUser(name, role) {
  return Object.assign(Object.create(userFunctions), {
    name,
    role
  });
}

It creates faster objects
It implements prototype delegation without classes
This factory function implements prototype delegation without classes: 1) Object.create() establishes userFunctions as the prototype, 2) Methods are shared among all created objects via the prototype chain, 3) This avoids duplicating methods in memory for each object instance, 4) It achieves behavior reuse without constructor functions or classes, 5) Properties specific to each instance are added directly to the object, 6) This pattern creates more memory-efficient objects while maintaining prototype inheritance.
It makes objects immutable
It creates singletons

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